Research on Fluoride-Containing Wastewater Treatment by Precipitation Respectively

Abstract

The development of Chinese graphite industry has a broad prospect. The purification of high purity graphite often produces much acid wastewater containing fluorine. The main characteristic of graphite industrial fluorine-containing wastewater is strong acidity and high fluorine content. The calcium salt precipitation method is used as primary treatment process in this research. The precipitator is selected and the precipitation process parameters are optimized. A method of treating wastewater dividedly according to wastewater source is put forward, compared with mixed wastewater treatment, better treatment effect is achieved.